Explanation of how the number of participants for analysis was determined.
Includes whether analysis was per protocol, intention to treat, or another method.
Also provides relevant details such as imputation technique, as appropriate.

Change from baseline in CD4+ cell count was imputed in case of missing values: in case of premature discontinuation, data were imputed with the baseline value after discontinuation (i.e. change=0, Non-Completer [NC] = Failure); otherwise last observation carried forward was applied.

Time Frame

Baseline (Day 1 of Week 0) to Week 240

Safety Issue

No

Population Description

Explanation of how the number of participants for analysis was determined.
Includes whether analysis was per protocol, intention to treat, or another method.
Also provides relevant details such as imputation technique, as appropriate.

ITT population: Participants who received at least 1 dose of study medication. Efavirenz group, 1 participant was excluded due to missing baseline CD4+ cell count. This was measured at Week 240 for the combined TMC278 and Efavirenz groups, as all TMC278 participants were switched after Week 96 initially to 75 mg and subsequently to 25 mg dose.

Number of Participants With Virologic Response (Viral Load Less Than 50 Copies Per mL) - as Defined by the Time to Loss of Virologic Response (TLOVR) Algorithm, by Area Under the Plasma Concentration Time Curve From Time 0 to 24 Hours (AUC24h) Quartiles [ Time Frame: Up to Week 96 ]